have turned up in rain water there. that means that 13 states report seeing small levels of radiation as a result of what's happening in japan. california, washington, massachusetts, arizona, pennsylvania, colorado, oregon, hawaii, and north carolina, south carolina, florida, and nevada. experts say there is no cause for concern. you get nervous and they say it's linked to japan because they can isolate the type of radiation. and i think the question is, you don't want to be an alarmist, but can we drink the drinking water and not worry? >> right now, we're safe. what we're detecting is iodine 131.